MEMS-Based Platform for Quantum Information Processing with Spins in Diamond
Abstract
This program exploits diamond nanomechanical structures to develop a platform for quantum computing. In this platform, defect centers such as nitrogen vacancy (NV) or silicon vacancy (SiV) centers couple to compression mechanical vibrations in a Lamb wave resonator (LWR).The resulting spin-mechanical interactions can be used to mediate coherent interactions between electron spins. The platform can be viewed as a solid-state analog of trapped ions. Research efforts carried out in this program have focused on tasks that are crucial for the experimental realization of a solid-state analog of trapped ions. Diamond LWRs implanted with either NV or SiV centers have been successfully fabricated. Soft-plasma-etching based surface treatment, which overcomes complications due to surface charge fluctuations in diamond, has been developed. Phononic networks, which consist of diamond LWRs and alternating phononic crystal waveguides and features an architecture of closed mechanical subsystems, have been designed and theoretically analyzed. This architecture enables nearest neighbor mechanically mediated coupling between spins and circumvents the scaling problems inherent in conventional phononic networks. Strong coherent spin-mechanical interactions via orbital strain coupling have been demonstrated. In addition, robust and nonreciprocal transport of phonons in phononic waveguides have also been explored.
Document Details
- Document Type
- Technical Report
- Publication Date
- Sep 29, 2022
- Accession Number
- AD1230774
Entities
People
- Hailin Wang
Organizations
- University of Oregon